1082813 has 4 divisors (see below), whose sum is σ = 1087548. Its totient is φ = 1078080.

The previous prime is 1082801. The next prime is 1082881. The reversal of 1082813 is 3182801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 994009 + 88804 = 997^2 + 298^2 .

It is a cyclic number.

It is not a de Polignac number, because 1082813 - 2¹⁰ = 1081789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2006 + ... + 2487.

It is an arithmetic number, because the mean of its divisors is an integer number (271887).

2^1082813 is an apocalyptic number.

It is an amenable number.

1082813 is a deficient number, since it is larger than the sum of its proper divisors (4735).

1082813 is an equidigital number, since it uses as much as digits as its factorization.

1082813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1082813 is about 1040.5830096633. The cubic root of 1082813 is about 102.6875566550.

The spelling of 1082813 in words is "one million, eighty-two thousand, eight hundred thirteen".